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Problem with zones

I recently had a broken pop-up sprinkler head...water was flowing through this terminating head and four others in this zone (1). I replaced the head, no apparent cracks in the piping. When I turned the zone on, very little water was leaking out and no water coming out the other three heads in that zone.
A total of six zones...all worked but zone (1) and the adjacent zone...total of four still working.

Not sure how to trouble shoot...found the solenoid/valves... 2 X Richdel 205s...don't know if they are working or not.

Are the other three heads on the same lateral line? When your head was damaged / broken, dirt and debris may have gotten in the line. You may want to remove the nozzles of those spray bodies and flush any sand or debris out by turning on the valve. BUt this will only be evident if the other heads on the same zone are working. If there is no water what so ever, then a valve replacement as Boots suggested is your wisest choice.